Calking machine for pipe joints



Oct. 2, 1923. 1,469,297

w. H. FLINT U CAULKING MACHINE FOR PIPE JOINTS Oct. 2 1923. 1,469,297

w. H. FLINT CAULKING MACHINE FOR PIPE JOINTS Filed March 18. 1919 '2Sheets-Sheet 2 P) v I g Na Manny v v Patentedfict. 2, 19123.-

' WILLIAM HJFLINT, or BIR INGHAmALA-BAM J cnnx ne iirncnrnn ron- PIPEJ0me.

' Applicationfiled March s, --1e19. se m. 233,379. I I

itsobect the )rovision of ortable calkin J V l P, z:

I means which are especially adapted .to a '15 joint of the characterset out in my application, Serial Number 2%),993, filed August 15, 1918,and which isreferred to hereinafter.

'20 spigot pattern, the packing of the joints has been relatively slowand moreor less unsatisfactory, andit is the purpose of my invention setout in former application referred to, to provide a packing joint whichshall be especially tight and effective, and to also provide in thepresent application suitable portable means which may be operated toproperly and successfully c'alk a joint of the character above referredto as Well as bei ing suitable for calking thejoints as heretoforecommonlymade. g

i The essential characteristic featuresof my invention reside inproviding a detachable head adapted to engageone section of the '35 pipeback of the bell portion thereof, in further providing a detachablesliding element adapted to the spigot end of the next adjacent sectionprovided with oalking means adapted to enter the space between thespigot ,40 and bell ends of the engaging pipe sections,

7 and said head and calking element associated and combined with powerdevices suitably connected with the head and adapted to forcibly movethe calking element toward and from the bell for the purpose of forcingin the 'calking substances, whether they, be metal or textile materiahorboth,the said apparatusbeingdetachable so as to be sue cessiv'ely usedat each joint along'the line of piping.

My invention also 'cons ists of improvements hereinafter describedwhereby the above objectsand results areattained, said mprovementscomprlslng certain organ zation' and OOmbIHQtlOII Qf PHJ ItS which "areBe it known that I, WILI IAivr H. FLIN In laying cast iron pi eo thebell and For the purpose of illustratingthe general nature of invention,I have shown in the accompanying drawing a suitable embodimentthereofwhich is in form, to give satisfactory and'reliable results',fbutitis-to be understood'that the details embodied in the i saidillustration and constitutingfthe several" lnstrumentalities of whichtheinvention con- I s1sts,;are glven by way of example only to arrive at aclear and definite understanding oftheessenti'all'features.enteringinjto-thein Y vention. I

Referring to'theldrawinggFig. lis asidefullydescribedhereinafter,and'more partic- I i v ularly definedintheclaimsjw elevation of twopipe se'ctions with myiim proved calkingmachine applied thereto;

Fig. 2 is av plan view ofthe same; Figi3r .is

a rear elevation" ofithe clamping head and with the pipe sectionedonline of Fig.

1; Fig.4 is a. cross sectiontaken'on line -2 of Flg. 1; F g. 51s a crosssection taken on llnerg g of Fig. l; F1g.r6* 1s a perspective view ofthe locking section of the calking head Fig. is a perspective viewof onesectionof the 'calking tool; 8 is a perspective View of the lockingmember of the clamping head shown in Fig. 3; Fig? 9 is alongitudinalsection of my improvedbell and'spigot joint in its finished calked condition. Y

2 is one section of pipe, and 3 is thefnekt section,-;section- 2havi11g' ,th ebell or socket 4, and section3 havingthe spigot end 5which fits into the bell, and which is to be calked in the mannerindicated in Fig. 9, for example. Broadly considered, my'ma'chinef is:adapted to calk' the lpacking of the pipe 7 joint, irrespective of'theparticular kind of packing employed, but the machine is espe ciallyuseful 111 packing'the parti 'ularicharac ter of joint which isillustrated in Fig. '9 of the drawings, a'ndiset out 'in'niy applicationherein before 7 referred to. Briefly stated, my improved pipe jointcomprises a tapered lead packing 30rwhich is arranged annularly aboutthe spigotende and in the 'seatof the bell socket and which wlien'drivenin from the dotted position, into the curved section linepositionprovides a tight metallic calking, Back of this metallic calking 3Oisfthe textile packing 31.which-may "be of ordinary.

plunibers tarred yarn runthrough a shredder andtwisted into a rope form;The

packing is furthei' completed by driving. into the space betweenv thehell 4 and the spigot end of the. pipe section3 two annularly superiinposed lead packing stripe-'32- and 33, whose inner edges 'arebeveled, and which when pressed upon the textile, packing spread asindicated and lock the packing:

' firmly in position. In the Fuse of my 1mproved machine, the oalkingtool 12 is employed to force the'lead-strip into call .is next employedto compress the textilef'packing 31; and finally the said calking toolora'shorterone is. em-

ing position; this tool ployed to forceinto' position the outer leadstrips 32 and 33 sothat thelcompleted pack-- ing is as indicated inFig.5 9.

7 indicates adetachable'h'ead which may be clamped to thepip'e 12 adacent to the hell 4 thereof, and upon which the pull or f zo straininthe act ofcalking may come; This headland itsconnectionfwith the bellprovides the basioresistance which permits the proper action of thecalkingtool 12 to take place, said action'being insured by the followinginstrumentalities. From the head 7 there extendson each-side of the hell4. and pipe 3 horizontal bars 8 whose ends are secured to transversecastings 9 which are transverse bolts 9*.

provided with a. transverse arch 10, bridg- 'ing'over the body of thepipe 3, and resting thereon so as to support the said castings 9, thebars 8'and the power devices 13 which are hinged to the castings 9 bythe The calking tool 12 is of cylindrical shape soasto surround thepipe/31, and 1s sufli- 'cient'ly thin radially considered to be able 'tofreely pass into the annular space between the hell 4 and the spigot endof the pipe 3, as" is indicated in This calking tool 12 is carried by'ahead 11', which is removably positioned about-the pipe 3 and is guidedupon'the said .bars 8 above described. In this [manner the calking headll with its calking tool 12may be reciprocated longitudinally of thepipe 3 while having its weight supported upon the side bars The calkinghead 11 is moved by the I links-14 which are hinged to the'calking 'headat 24%, and hinged at their other ends to the swinging frame 34 of thepower de vices 13, It will be manifest that when the rmme 34 is movedabout its fulcrum or axis 9, the links 14' will impart motion to thelca-lking head 11, and thereby bring the calkingtool 12 into thrustingrelation; with the packing within'the belli It will also be evident thatwhen'the thrust comes upon the calking tool the frame 9 must be heldagainst movement awayfront the bell, 4, and this is accomplished bymeans otthe two 'side barsi8 and the head 7 which is heldi againstlongitudinal'inovement by tl ;bell of the pipe-2; 1 s

7 Having, in ageneralway, shown the relatron ofthe various parts, I will11 w do scribe the various elements enterin into the L a: V p

machine more in'detail. 1'

i T he head7 is best shown in'Fi s. 1,21an 1-,

3 and comprises two portions 15 which are made substantiallyQseini-circular and" lit about the pipe-2 lhe lower. portionsof theseparts '15 are provided with slotted" hook shape parts 16, which are"linked to-' getherby-the connecting bar 17, best shown 7 The upper partot the I in Figs. 3 and 8. semi-circular portions 15 are connected by atransverse rod '18,. screw threaded on its tension may be put upon the"rod 18;ahd

in thatyinanner clamp the semi-circular parts 13 ti 'htl in Josition."This head? conia y l ..a

prising the parts described, "has a less diameter of: open ng thantheigreateSt-d1- aineter of the bell portion-4 ofthe pipe, so that'itcannotv be. pulledover the bell; hence saidlbell acts a-san' abutmentagalnst "ends amt provided with nuts"'19f by which 7 "so u which; thehead 7" is received and held aga nst longitudinal movement upon the pipesection 2.

T' I do not restrictinyself any manner to the construction'o'tt thishead, as any suitableconstruction maybe employed" which I will fit tothe bellend of the pipe section whereby itv cannot be pulled over thebell and whereby it acts as a support for the side bars 8 upon which thepull is exerted when 7 thecalking operation is taking place. I

have shown, however, a convenientfra-ine by way oiteXam-ple, whlch willaccomplish the results required. 8 indicate lateral lugs upon the sidebarsiS is exerted through the link portionsj upon the pins 20 and thencethrough the lugs Sflupo'n thehead 7,

The calking head 11 is shown as made in inverted U form and is bestshown in Figs.

4', 5 andG, This headinay be put into place upon the pipe 3' bystraddling the said pipe and then locked thereto by means, of the"locking bar 22, extending across the 'bottom portions from sideto side.Aswill be seen from Fig. 4, the lower si de edges of the head Ila-reprovided with longitudinal flanges'24 which are received in"longitudinal side grooves 23 in thelocking bar 22. In this manner, thelocking bar maybe slid longitudinally into the looking position.

Furthermore, the end of thelocking bar next adjacent to the bell isconstructed as shown in'Figs. 5 and G, having the groove .25 :andtheflange 26, which parts are in circuniterentialjfahnen ent w th thecorre-' sp nding grooves a d fiang' ffi h head 11, said grooves andflanges receiving the flange portions 29 of the calking tool' l2.

By'this construction the calking tool sec tions 12 are attached to-thecalkingl head 1'1 bya bayonet joint and hence are easily de tachalolewhen required. As the locking section or bar 22 fits upon the guideflanges of the-head 11 and comes into fixed position with its grooves 25and flange 26 n transverse allnement i with the corresponding parts-:ofthe head, it will readily be understood tha't'so' far as'receiving andsupporting the calking tool 12,fit is as if it were in tegral with thehead 11. V fhen it is desired to detach the calking tool and head, forshifting to the next joint to he calked, it is only necessary to rotatethe 'calking tool sections 12 and then pull them forward, next removethe locking Sectionor har 22 from the head 11 and lift thelatter upwardwith the side frames 8 of themachine. V

The connection ofthe calkinn' head with the side frames or bars '8 isclearly shown in F 5, from which it will be seen 'that the head hashorizontal guide slots 21 through which the frames or bars 8 extend andupon which the head and'its-calkingtool is supported and guided. -Theconnection of the calking headwith the links orthrust bars 14, leadingfrom the power devices, is shown in Fig. el,wherein theibars l4 fit intoslotted portions or sockets and are hinged upon transverse pins 24?. e r7 1 Referring 'now to the power devices, the frame 34, which is hingedat to the frai 1e 9 on the-ends of the side frames'or bars'S and alsohinged at 1 k to the links l4for operating the calking means,is freetooscillate or"rock-u'pon "S eer. fulcrum and hence acts as: a lever; 341s a hand lever which is hingedfto the frame 3% To the lower end orheelofthis-hand lever is hinged a pawl 36, which is shaped to engage theratchet teethand sockets 37 on the frames 9.. .lVhen the power device isinoperation the pawl. 36 engages the teeth 37,- as indicated in dottedvlines (Fig. 1); and by pulling uponjthe hand lever -towardthe calking.tool, the frame 34 wili be rocked downward and cause its lpivot'connection 35;withfframe 9 but also move the'latter downward, which willimpart a longitudinal or calking motion tothe rods 14; the head 11 andits tool 12.. By adjusting the pawlinto the. sockets of therespective'test-i167, -th

position of the ,c'alking tool. with respect t the belll will be variedfor thesame' initial position of lever 3%, but in all such positions ofadjustment theoperation of thehand lever 3 5 will be the same in its eilectiveness in-applying'power in the act of 'calkingm It,

will be understood, however. that the a dustm'ent of pawl 36 into dlf"A. L 1. Gnu .SOCKQ L;

3,7,the callrihg tool may-be made to'en er the hell to a grcateror'less:distanceinthe calking operation with the samethrowof theflever 34'. InFig. l, the" pawl 36 is shown as held out of action-andthis is done byhaving the'rod 38 leading from the pawl, hooked over the pivoted hookframe 39: To retain the parts inthis position,- the hook frame is lockedinh'ooking position 'by'the lock 40, which is hinged to'the end ofthehand lever. Whenthis lock. i0'is swung to one side, the hook frame 39releases the rod 38 and permits the pawl to engage thei teeth 37. Asshown n Fig. 2, thehand lever 34s" and connected parts are-how-shaped,so as to i provide corresponding" parts at each side of themachin'e, butit Will not henecessaryto go more into detail as to these parts, since areference to Figs. 1 andtZ will make'their construction easilyunderstood. f 1

The endsefthe' frame sale.pmiaeawin1 a cross shaft '41- up roller 42 isjournals to. roll upon the upper shown. It will he understood th thisroller facilitates the sl iilitin'g of the machine along the line ofpipe. 'll hen the side frames or bars 8 are detached from thehead 7 andsaid roller adapted on which a rgrooved' surfaceflof the pipe. 3-,

the calking tool 12 and s etionzor barl22- l.

oi the calking-headl-l -removed,'the bars 8' and head 11 thereon ay beliftedandthe machine moved :along the pipe u'ponroller i2 like a wheelbarrow.- In making the disoonnection of the side, frames- 8: from thehead 7, it is only necessaryto pull out "the vhich are hinged at theirupperend's to the Y transverse shaftl. "When thcsh'oes it restupon theground or upon other support, the

operation of thelpower devices will not. impart; any severethrustdownward upon the pipe. When the use of these shoes are not required,they may he turned upward sufiieiently to be out of "the 90 p omitted,if desired..-

In the operation of my improved'tool for calking' thev pipe omtshown 111F 19;. 9, I;

' proceed as follows: iilrst insert anannular lead/strip, 30 whosenormal cross section corresponds to that of strip;83. inverted, and by,the use of the mach" Y .12 drives this lead sti tightly; intoqthe spacehetweenthe spigot; end 5andhotto1n .e the callring tool" Theymay he 7 ofthe hell socket, said lead curvinginward at its forwardor!beveledendfand' flattening at its outer end. WVhen this isrbeingdonej the pawl fifiisengaging the uppermost tooth r 1 and socket j The calkng tool l'sthen I withdrawn from the bell and the textile packing .31introduced- The calking tool is then; employed to drive in this'packing;and may. be manipulated, ifd'esired, during the .act of introducing thepacking to pack sucicessive strands as introduced. During the.

7 final portion of this operationthe pawl 36 'may be placed inengagement with the middile' toothand socket 37. After the pack-Y ing 31is .driven in, the outer end of the bell T is filled by twoconcentrically arrangedlead strips 32 and 33, which are driven in byacalking tool 12 of shorter length. In this operation the pawl 36 isplaced in engage ment with the lowermost 'tooth' and socket l/Vhen thelead calking strips 32 and 33 are driven into the bell to seal it, theirbeveled edges cause "the lead to spread, the strip 1 extending intotheusualundercut groove as shown 1n F 1g. .9.

forms of, packing.

33 pressing tightly upon the surface of pipe section'3 and strip32bending outward and lVhile my calking machine is particularly useful in(talking pipe join s with my improved packing (Fig. 9), I in nowise'restrict myself in its use, as it may be outer edge as indicated at36, and when pulled up to the position indicated in Fig 1, this slottedportion receives the projecting part 36 from the frame 34. When the pawlis hooked up in this manner by the link 38 being hooked over the hook89, the lever 346 and the frame 34: may be moved as a unit and impartquite an extended movement to the calking head 11 and its tool 12, whichoperation may be employed when forcing in the textile packing, and whenwithdrawing the calking tool from thebell for inserting packing orintroducing the lead strips.

When, however, it is desired to exert great 'power for forcing the leadstrips into position, the link 38 is unhooked and the pawl moved downinto engaging position with the" teeth 37 as indicated in dotted linesin Fig. 1. When in this adjustment. the lever 34? co-operates withthe'frame 34- as a toggle and exerts great power with'relatively smallmovement to the calking tool. This will enable the necessary, power tobe exerted for insuring theshaping of the metal strips when being forcedinto position.

' 1 Itwilllbe seen that 'the essential features entering-into myimproved machine, are that] the power applying ineans'must be an-'chored, asit were, on one pipe section and ters Patent, is

the calking tool bedriven into-'theabell ofthat section 5 in other wordsthe power. devices are connected to the'bellend of one pipe sec tion andoperate the calkin-g tool arranged to move over the body ofathe nextsection, and into the bell socket, whereby all of-the calkin'g strainsare sustained by the bell which is being calked. Byreaso-nfof this, thepossible strain which may be, applied the calking operationisonl ylimited by the strength of the'bell pipe. My invention em.-

bodies this feature broadly irrespective of the details which have beenincorporated into the machine by way of example.

It will now'be apparent .that I have de vised a novel and usefulconstruction which embodies the. features of advantage enumerated asdesirable,.and while 1 have in the present instance shown and described;the preferred embodiment thereof which has been found in practice togive satisfactory and reliable results/it is to be understood that I donot restrict myself to, the details,

as the same are susceptible elf-modification in various particularswithout departing from the spirit or scope of the invention-as setforthin the appended {claims Having now described my invention, what Iclaim as new and desire to secure by Let- 1. A calking machine for belland spigot pipe joint, comprising a detachable head adapted to engagethe body of the pipe adjacent tothe bell end thereof and provided withclamping means for clamping the head upon the pipe, calking meanscarrying a calking tool and adapted to move longitudinally relatively tothe spigotend of thepipe engaging said bell, andmanually operabledevices having their weight supported upon theispigot pipe end andconnected with the detachablehead and with the calking means whereby theacalkiiig meansis made to move toward the'detach able head in the act offorcingthe calking tool against the calking materials in the lUO socketof the bell andalso permitting said calking tool to be positivelymovedyawaiy I from the detachable headin theactofire moving the calkingtoolfromfcontact with the socket of the the calking material in bell.

'2. The invention according toblaim 11,

able head formed in two parts adapted to' be arranged on opositesides'ofthe pipe. back of the bell thereof, said head'p'rovided withmeans at the bottom to link'the two parts together'under the pipeandfurther providedat its upper end with screw clamp 1mg devices fordrawing the two parts to wardi each other for positively ;cla np ingthem upon. the pipe to prevent'theihead shifting longitudinally asv wellas against Y a circumferential movement.. I

further distinguished by having the detaclrineaeezf 3 V 5.

3. The invention specifiediin claim l wherein the detachable head-ismade of a plurality of clamping parts arranged tobef i adjusted aboutthe bell end of the pipey and provided with screw clampinglmeanss-fo'rholding the parts in desired relative .,cla1np-. ing positions toprevent the/head passing; over or shifting relatively to the bell thepipe.

d. The invention. according to I claim 1,: wherein further theconnecting means-be tween the detachable head and the manually operabledevices consists of two side frames respectively connectedat one endwith the detachable head on opposite sides and have ,ing their otherends united by a tramehav- 'ingr-an upper transverse portion adaptedftorest upon the pipeand'nin thatman'ner held- 7 agamst downward thrust and1 provid ng 7 a:

support for the manually operable devices.

5. The invention specified' iin claim 1,- wherein the connecting meansbetween the detachable head and the'manually operable devices comprisetwo side frames-having one of their ends detachably connected with thedetachable headlanditheir other "ends connected a frame so constructedasto extend over the body .01 the pipe'andibe sup-,

ported thereby, and said manually operable devices hi'ngedly positionedion saidframes" SO as'to. slmultaneously plOVldG force upon v the sideframes and the detachable "head in ually. operable devices hingedlyconnected in: relation to and with the detach-able head and so connectedwith the calking means-thatwit one direction and upon -the"calkingmeansin the" opposite direction. e I GPTheHinVentiOn specified in claim 1,further characterized by having the manmaybethrust forward toward thedetachable head or withdrawn backwardlyrelatively thereto in apositivemanner sa d manuallyoperable devices having means which at all 7 timesin operation have-their weight sustained on the spigot pipe end.

'7 7. The invention specified in claim 1,'

wherein the calking means is made up of parts comprising a sliding headand a detachable sectional calking tool carried thereby and constructedso as to be removably applied about the body of the pipe.

8. The invention specified in -7clain1 1, wherein the calkinp; meanscomprise a calking tool made in detachable parts so as to be removablefrom about the body of the between pipe sections, comprising a detachk atool parts.

able means:adap'tecl to fit back of the' en larged bell. portion of oneof the pipewsec- I tions, two I side frames respectively secured atgoneend to'the sides ofthe detachable:

means .so, as to be positioned at opposite sides: of tllelDlPG, sa dside frames havingltheir other endsumtedbyflagframe having a! transverseportion adapted to Zfitiover, the

body. of the: pipe: whereby said sideiframes" are further f-supporte'daa i;call ing I tool ar ranged to slide longitudinally on-"the side ,1

frames. 1 andguided rt'hereby; and -m'anually operable devices hing-anconnected; in re lation to the side frames; and fh'aving ua.

connection with the ca'lking tool for-forcing ittowa'rd the detachablemeans when cjalkg' ing'. the pipe joi'nt; .i a

being separated: for; removal from .fthepipe V, lOfiTlleinventionspecified in" claim 1 wherein the calking tool is madetin 'cylin dricalform to surround thei'pip'eb'ody and; split longitudinally so as :to abe 1 capable ofu and body and detachably securedto a;calkingv headprovidingconnection-with the"! manuallyoperable applying devices. -il1'.'-The51nvent1on= specified in c'laim9',--

wherein the ,calking toolis made in'lpartsi i so that it may be fittedabout or removed from the-pipe body,*'and connecting means between-'the' manually operable" devices :and

detachably receive and hold the/oalking -12. Theainvention specified "vclaim-19 the callring' tool comprising parts-which'are-s guided uponthe'sidefframes and shaped to wherein the' calking tool'isfurther provided wth downwardly extend ng portions adj acent tojthe manuallyoperable'devices for reaching to the.groundbelowthe'pipethere? bysustaining the downwards ythru stcon "the sidetrames and weight of thema-nually op erabledevices as well as stabilizingthe Ina- L chinein'position on t he' pipe.

V 13. The invention specified in claim 9, i wherein the manuallyoperable devlces comprise a lever and rods for reciprocating the calkingmeans, and manual means embodying a toggle construction for'varyingtheforce of their action'upon the calking means and calking tool, wherebythey maybe moved at greater or lessspeed andv with greaterpower towardthe detachable head.

14. The invention specified in claim 9,

wherein the head 'which is] adapted to the bell of the pipeis formed inparts and detachably secured to the side frames.

15. The invention specified in claim 9,

wherein the head'is formed of two curved: parts adapted to fit'upondiametrically opposite sides 01": thepipe, said parts connected by meanswhereby they may be positioned and clamped tightly upon the pipe andto]- which parts the side frames are detachably connected. 7 V 16. Theinvention specified, in claim '9,

ne d

' v wherein the calking tool is formed ofcurved vide'dr'a calking headguided upon the side;

* an invented U shape to fitO-VQI the pipe body "and providedon'its'o-pen' end with a locking section bridging the opening offthe-Ushaped calking head, and saidi -lockin'g section also Ijsuppo-i'ting'thecalkingtool p aits detachable parts, and there isturther p 'oframesa'nd operated by the manually op1- 'erable devices,said'head carrying the calk- 1 ing tool: sections, said calkinghead madeof '17. The invention speclfied 'n claimrail herein themanuallyioperabledevices are; provided; w th ad ustable means whereby sired, Whilemaintainingthe normal connec- 1tion' 1t-h the detachable head andcalking they become inoperative or operative, as denieansv r '18; In, a:'calking machine, i means detach 1 ably connectiblel with. the: enlargedor. bell; end-{of a; pipe, combined'with side frames "extending from",said detachable'means, va

"sidefiamesahddniadein sections: so asto be removable from the pipe,manually operable calking tool supported and guidedbythe devices hingedto the 7 side frames andliav- "1 ing a connection with thecalking toolto moveit towardthesaiddetachable meansconnected to the bell end of thepipe, and.

adjustable means-embodied in the manually" operable devices forlvaryingthe force ot action upon the calkin'gtool. V

:19. Combination of two pipes fOIlIllIlgiik bell andspigot joint, with acalking machine comprising detachable means adapted to engage the bellend of one of the pipes so as to )befheldagainst longitudinal movementin I Yt-he direction 01": the other; pipe, two side: frames respectivelyex'tending from the de-'' 'mchable lmea ns at" the opposite sides of theT pipe and-positioned longitudinally thereon,"

V a icalking tool supported by the side frames andremovably arrangedWith respect to,- V r V V I out of the cal-king space; of thebell,van2l.

manually, operable devices connected with o either one at thepipesandhioable into and theesaid side frames adapted tomoye the ;201; Thecombination of: two" pipes' providin'gka' bell andsp'igot joint, with aIna-- ClHnG'fOI" calk-ing the jolntzcompr sing ado vvtaehable 'calk-ingtool movab-le into-and outli i of" the socket of the bel-l,*manually:operable idevic'es'for Voperati-n the, calking: tool, and

ineans' detachably' c l'a-mped: in immovable;

gripping position upon :thepipe back- 0'2 .the'

bell formaintaining the manually operable devices in" position duringtheir entire? ie-ui ver'sal operation upon thecalking tool. T a.

21. The combination of two sections of pipe providi-ng' a bell andspigot joint, With f a machine for ca-lking'the joint comprislngadetachable calking; tool movable into and: out of the socket of thebell, manually operable' devices'for operating thecalking tool,

means for sustaining the weight of the manjually operable devices uponthe body of sec-.;.

75 and at adistan'eei from the bell andsocket of i the pipe joint, andseparate means detachably but rigidly clamped upon the other pipesection back of the bell thereof for r tionofthe pipe having the spigotportion holding the; manually operable devices in position thereonduring'the-ir' ope iationupon V thecalking-qtool in" both directions. a

WILLIAM 11. 3]

- Ins-testimony ot'w-hich inyentionfl here unto set myhand. 1

